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Q)why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?
Ans) The Standard free energy of formation of Cu2S is greater than those of CS2 & H2S .Hence , niether carbon nor hydrogen can reduce Cu2S to Cu metal. On the other hand , standard free energy of formation of Cu2O is much lower than that of CO2 & hence , carbon can easily reduce Cu2O to Cu. Cu2O+C (s) -> Cu(s) +CO(g)
what is colloid?
1. The feed to an ammonia synthesis reactor is 25% (lbmole) nitrogen with the balance hydrogen. The flow rate is 3000 kg/h at 65°C and 95 bar. Calculate the flow rate of nitrogen
what is chemistry
Write the neutral calcium atom has a number The neutral calcium atom has a number of valence electrons euivalent to its group number, that is 2.
Curve of potential energy versus angle of internal rotation The curve of potential energy versus angle of internal rotation is essentially identical to the curve for ethane, ex
Structural needs for hyperconjugation (i) Compound could comprise at least one Sp 2 -hybrid carbon of as well alkene alkyl carbocation or alkyl free radical. (ii) ∝- carbon
Figure states energy differences for the combustion of hydrogen, an exothermic chemical reaction. The combination of oxygen gas and nitrogen gas to form nitrogen monoxide is an exa
Hi, my name is Teesta and I need your help with this question: You are asked to make 1 Liter of 5M Sodium Chloride (NaCl). How many grams of NaCl are needed?
Q. What are the properties of liquids? Ans. Evaporation of Liquids When we place a liquid in an open container, it slowly disappears. If we heat a liquid it disappear
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